WINDOW GP 2G0263 - Caterpillar

chart that follows: 3. (a) Apply positive (+) source voltage to terminal 2. If bench testing, Step 3 can be used as stated. When the unit is installed on the engine, all wires must be disconnected from Terminal 2 to prevent a direct short.Check the time form the moment voltage is applied to verify chart that follows (do not leave voltage on terminal 2 for more than 60 seconds): (b) Remove positive (+) source voltage from terminal 2. Check the time from the moment of removal to verify chart that follows: 4. Remove wire from terminal 4 and verify chart that follows: Instruments And Indicators
Oil Pressure Sending Unit
Sending Unit For Oil Pressure
(1) Terminal. (2) Fitting.1. Connect the sending unit to a pressure source that can be measured with accuracy.2. Connect an ohmmeter between fitting (2) and terminal (1).3. Take resistance readings at the pressures shown in SENR1096.4. If a unit does not have the correct resistance readings, make a replacement of the unit.Water Temperature Sending Unit
Sending Unit For Water Temperature
(1) Terminal. (2) Nut. (3) Bulb.1. Connect an ohmmeter between terminal (1) and nut (2). Put bulb (3) in a pan of water. Do not let the bulb have contact with the pan.2. Put a thermometer in the water to measure the temperature.3. Take resistance readings at the temperatures shown in SENR1096.4. If a unit does not have the correct resistance readings, make a replacement of the unit.Electric Indicators
1. Put the indicator in position with the letters horizontal and the face 30 degrees back from vertical.
Wiring Diagram For Test
(1) Terminal (for test voltage). (2) Test resistance.2. Connect the indicator in series with the power source and the middle test resistance shown in the chart.3. Let the indicator heat at the middle resistance for five minutes, then check the pointer position for all of the resistance given.Mechanical Indicators For Temperature
Direct Reading Indicator (Typical Example)To check these indicators, put the bulb of the indicator in a pan of oil. Do not let the bulb touch the pan. Put a thermometer in the oil to measure the temperature. Make a comparison of temperatures on the thermometer with the temperatures on the direct reading indicator. Refer to SENR1096 for the calibration chart.Mechanical Indicators For Oil Pressure
Direct Reading Indicator (Typical Example)To check these indicators connect the indicator to a pressure source that can be measured with accuracy. Make a comparison of pressure on the indicator of test equipment with the pressures on the direct reading indicator. Refer to SENR1096 for the calibration chart.Air Starting System
Pressure Regulating Valve
Pressure Regulating Valve (Typical Illustration)
(1) Adjustment screw. (2) Regulator inlet. (3) Regulator outlet.To check and adjust the pressure regulating valve, use the procedure that follows:1. Drain the line to the pressure regulating valve or drain the air storage tank.2. Disconnect the regulator from the starting control valve.3. Connect an 8T0849 Pressure Indicator to regulator outlet (3).4. Put air pressure in the line or tank.5. Check the pressure.6. Adjust the pressure regulating valve to ... 690 to 1030